Carnegie Mellon, 1978-.
Earthquake engineering, structural and computational mechanics (large scale computing, finite element, and boundary integral methods)
B.S. 1963, Universidad Nacional Autonoma de Mexico
M.S. 1966, Rice University
Ph.D. 1971, California Institute of Technology.
Seismic Motion in Large Alluvial Basins.
The main objective of this research is to construct mathematical models for investigating the spatial and temporal variability of seismic ground motion in large basins, with a view toward incorporating local site condition effects into the design ground motion. Attention is given to examining local site conditions response, with a view toward incorporating these effects into the design ground motion.
Finite Element and Boundary Integral Coupling Methods for Fluid-Structure Interaction.
We consider the problem of inhomogeneous solid bodies surrounded by a fluid and study the deformation of the structure as well as radiation and scattering effects. The purpose is to develop efficient coupled finite element-boundary element methods for this, and other interface problems.
X. Li, J. Bielak, and O. Ghattas, "Seismic response in a three-dimensional basin on a CM-2," Proc. 8th Int. Conf. of the Int. Assoc. for Comput. Meth. and Adv. in Geomech., Morgantown, WV, May 1994.
X. Zeng and J. Bielak, "Stability assessment of a unified variational boundary integral method applicable to thin scatterers and scatterers with corners," Comput. Meth. Appl. Mech. Eng., Vol. 111, pp. 305-321, 1994.
L.F. Kallivokas and J. Bielak, "Time-domain analysis of transient structural acoustics problems based on the finite element method and a novel absorbing boundary element," J. Acoust. Soc. Am., Vol. 94, pp. 3480-3492, 1993.